(Step-by-Step) Infants Speak At what significance level do the data provide evidence that the mean age at which infants speak their first word is NOT 15.5
Question: Infants Speak
- At what significance level do the data provide evidence that the mean age at which infants speak their first word is NOT 15.5 months?
- At what significance level do the data provide good evidence that the mean age at which infants speak their first word is GREATER than 12 months?
- Give the details of a 98% Confidence interval for the mean age at which children speak their first word.
Deliverable: Word Document 
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